I built this for my own use case, and I think other people could benefit from it. It's essentially a Rust rewrite of the ffmpeg CLI command, but with a modern API and good defaults + a native HTML/CSS composition engine that's been fine tuned for speed and memory efficiency. Under the hood, it still uses the libav* codecs from ffmpeg, so it can still work on a variety of formats. Works very well with AI agents too: prompt what kind or intro/animation/graphics you need (or give it a reference), let the LLM come up with the HTML/CSS for it (Opus 5.5 is quite good at this), and let it use them o…

#hackernews #showhn #projects #css #html #ffmpeg #graphics #cli